Now that you mention it, this set also resembles the look of the first
Commander Keen games to some degree. Good times
Here's the actual game screen I used as a reference for my demo pic:
I think it'd be possible to port some of the levels from the original game to KS, especially by using KS+ OCOs to customize the enemies and traps.
Oh, and I forgot to mention this: feel free to edit the set and/or copy any of the tiles onto your own tilesets. The reason it doesn't say "KS Use/Edit OK" in the credits bar is simply because I ran out of space there